Ssh – How to get Home, End, Delete keys working for PuTTY SSH sessions to Cisco ASA

Here is a series of steps you can use to diagnose the problem:

1. Check if sshd is running on the host(ps -ef|grep ssh)
2. Ensure that sshd is binding to port 22 using netstat (netstat -al|grep "LISTEN " should work)
3. See if you can connect to the real IP address via ssh from the host machine (if not, there is either a local firewall, or sshd is not working as it should
4. Try to ping the host from the client machine (if this fails, there is a routing problem)
5. Try to telnet to port 22 from the client machine (telnet 192.168.1.1 22) (if this fails, a firewall is blocking you)
6. Finally, if all the above succeed, but you cannot ssh using the ssh client - re-install your ssh client.

Check your /var/log/secure or /var/log/auth on the Linux server for information why the key is not accepted.

Also, is the .ssh directory in the homedir of (and owned by) the user you are using to connect?

If you want to connect with the root user, it might be disabled in /etc/ssh/sshd_config.